N-Methyl-N-(sulphonic acid amide-n&#39;-sulphenyl)-carbamic acid esters

ABSTRACT

N-Methyl-N-(sulphonic acid amide-N&#39;-sulphenyl)-carbamic acid esters of the formula ##STR1## in which R 1  is dialkylamino with 1 to 4 carbon atoms in each alkyl radical, phenyl or phenyl carrying at least one halogen, alkyl with 1 to 4 carbon atoms, nitro or trihalogenomethyl substituent, 
     R 2  is alkyl with 2 to 8 carbon atoms, cycloalkyl, phenyl or cycloalkyl or phenyl carrying at least one halogen, alkyl with 1 to 4 carbon atoms, nitro or trifluoromethyl substituent, and 
     R 3  is phenyl, naphthyl, benzodioxolanyl, dihydrobenzofuranyl or indanyl; phenyl, naphthyl, benzodioxolanyl, dihydrobenzofuranyl or indanyl substituted at least once by trihalogenomethyl, halogen, nitro, cyano, cycloalkyl, formamidino, dioxanyl or dioxolanyl, or by alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto, alkynylmercapto or dialkylamino, each with up to 4 carbon atoms per aliphatic moiety, or an oxime radical of the formula ##STR2## R 4  and R 5  each independently is cyano or alkyl, alkoxy, alkylthio, alkoxycarbonyl, dialkylcarbamoyl or dialkoxyphosphoryl with up to 4 carbon atoms per alkyl moiety, or 
     R 4  and R 5 , conjointly with the adjacent carbon atom, form an optionally methyl- or phenyl-substituted dithiolane, dithiane, oxathiolane or oxathiane ring.

This is a division of application Ser. No. 756,049, filed Dec. 30, 1976,now U.S. Pat. No. 4,148,910.

The present invention relates to and has for its objects the provisionof particular new N-methyl-N-(sulphonic acidamide-N'-sulphenyl)-carbamic acid esters which possess arthropodicidaland nematicidal properties, active compositions in the form of mixturesof such compounds with solid and liquid dispersible carrier vehicles,and methods for producing such compounds and for using such compounds ina new way especially for combating pests, e.g. insects, acarids andnematodes, with other and further objects becoming apparent from a studyof the within specification and accompanying examples.

It has been disclosed in U.S. Pat. No. 3,954,836 and German PublishedSpecification DOS No. 2,344,175 that N-sulphenylated carbamates, such asN-methyl-N-(p-chlorobenzenesulphonic acidmethylamide-N'-sulphenyl)-carbamic acid α-naphthyl ester (Compound A),N-methyl-N-(benzenesulphonic acid methylamide-N'-sulphenyl)-carbamicacid (thioacetic acid S-methyl ester)-oxime ester (Compound B),N-methyl-N-(p-toluenesulphonic acid methylamide-N'-sulphenyl)-carbamicacid (thioacetic acid S-methyl ester)-oxime ester (Compound C),N-methyl-N-(p-chlorobenzenesulphonic acidmethylamide-N'-sulphenyl)-carbamic acid (thioacetic acid S-methylester)-oxime ester (Compound D) and N-methyl-N-(benzenesulphonic acidmethylamide-N'-sulphenyl)-carbamic acid 3-isopropylphenyl ester(Compound E), possess insecticidal, acaricidal and fungicidalproperties. However, their action is not always fully satisfactory,especially if low amounts are used.

The present invention now provides, as new compounds, theN-sulphenylated carbamates of the general formula ##STR3## in which R¹is dialkylamino with 1 to 4 carbon atoms in each alkyl radical, phenylor phenyl carrying at least one halogen, alkyl with 1 to 4 carbon atoms,nitro or trihalogenomethyl substituent,

R² is alkyl with 2 to 8 carbon atoms, cycloalkyl, phenyl or cycloalkylor phenyl carrying at least one halogen, alkyl with 1 to 4 carbon atoms,nitro or trifluoromethyl substituent, and

R³ is phenyl, naphthyl, benzodioxolanyl, dihydrobenzofuranyl or indanyl;phenyl, naphthyl, benzodioxolanyl, dihydrobenzofuranyl or indanylsubstituted at least once by trihalogenomethyl, halogen, nitro, cyano,cycloalkyl, formamidino, dioxanyl or dioxolanyl, or by alkyl, alkenyl,alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto alkenylmercapto,alkynylmercapto or dialkylamino, each with up to 4 carbon atoms peraliphatic moiety, or an oxime radical of the formula ##STR4## R⁴ and R⁵each independently is cyano or alkyl, alkoxy, alkylthio, alkoxycarbonyl,dialkylcarbamoyl or dialkoxyphosphoryl with up to 4 carbon atoms peralkyl moiety, or

R⁴ and R⁵, conjointly with the adjacent carbon atom, form an optionallymethyl- or phenyl-substituted dithiolane, dithiane, oxathiolane oroxathiane ring.

Preferably, R¹ represents dimethylamino or phenyl which can optionallybe substituted by chlorine, methyl or trifluoromethyl, R² representsalkyl with 2 to 6 carbon atoms, cyclohexyl or phenyl, and R³ representsphenyl which can optionally be substituted by alkyl with 1 to 3 carbonatoms, alkoxy with 1 to 3 carbon atoms, methylmercapto, dioxolanyl ormethyl-substituted dioxolanyl, or represents benzodioxolanyl ordihydrobenzofuranyl which can optionally be substituted by methyl, orrepresents naphthyl or the oxime radical ##STR5## wherein R⁴ and R⁵ eachrepresent alkyl with 1 to 4 carbon atoms, methylmercapto, cyano,dimethylaminocarbonyl or ethoxycarbonyl or represent, conjointly withthe adjoining carbon atom, a dithiolane ring.

It is decidedly surprising that the compounds according to the inventionexhibit a greater insecticidal, acaricidal and nematicidal action thanthe N-sulphenylated carbamates known from the state of the art. Thematerials according to the invention thus represent an enrichment of theart.

The present invention also provides a process for the preparation of anN-sulphenylated carbamate of the formula (I), which is obtained when acarbamic acid fluoride of the general formula ##STR6## in which R¹ andR² have the abovementioned meanings, is reacted with a compound of thegeneral formula

    R.sup.3 --OH                                               (IV),

in which

R³ has the abovementioned meaning, if appropriate in the presence of anacid-binding agent and/or of a diluent.

If N-methyl-N-(benzenesulphonic acid propylamide-N'-sulphenyl)-carbamicacid fluoride and 1-methylthio-acetaldoxime are used as startingmaterials, the course of the reaction can be represented by thefollowing equation: ##STR7##

The phenols and oximes of the general formula (IV), used as startingmaterials, are known.

The carbamic acid fluorides of the formula (III), which are alsoemployed, were not previously known, but can be prepared analogously tothe process described in German Published Specification DOS No.2,254,359. In this process, sulphonic acid chlorides are first reactedwith primary amines to give the corresponding sulphonic acid amides.These are then converted, by means of disulphur dichloride, intodisulphides. The scission of these disulphides with chlorine gives thecorresponding sulphenechlorides, which can be reacted withN-methylcarbamic acid fluorides to give the carbamic acid fluorides ofthe formula (III).

It is preferred to use carbamic acid fluorides of the formula (III) inwhich R¹ represents dimethylamino, phenyl, 2-chlorophenyl,3-chlorophenyl, 4-chlorophenyl, 3-trifluoromethylphenyl, 2-tolyl,3-tolyl or 4-tolyl and R² represents ethyl, propyl, butyl, hexyl,cyclohexyl or phenyl.

If phenols of the formula (IV) are used as starting compounds, then R³preferably represents a phenyl, 2-isopropylphenyl, 3-isopropylphenyl,2-isopropoxyphenyl, 3,5-dimethyl-4-methylmercaptophenyl,3-methyl-4-dimethylaminophenyl, 4-nitrophenyl, 2-allyloxyphenyl,3-sec.-butyl-4-methylphenyl, 4-methyl-3-isopropylphenyl,2-dimethylaminophenyl, 2-(1',3'-dioxolanyl-(2'))-phenyl,2-(4',5'-dimethyl-1',3'-dioxolanyl-(2'))-phenyl, 1-naphthyl,4-(1,1-dimethylindanyl), 2,2-dimethylbenzodioxolanyl or2,2-dimethyl-2,3-dihydrobenzofuranyl-(7) radical.

If oximes of the formula (IV) are used as starting compounds, thenoximino-malonic acid diethyl ester, 2-oximino-1,3-dithiolane,4-methyl-2-oximino-1,3-dithiolane,4,4-dimethyl-2-oximino-1,3-dithiolane,4-phenyl-2-oximino-1,3-dithiolane, 2-oximino-1,3-oxathiolane,2-oximino-1,3-dithiane, 2-oximino-1,3-oxathiane, hydroxamylthioaceticacid S-methyl ester, α-methylmercapto-α-oximino-acetic acid ethyl ester,α-methylmercapto-α-oximino-N,N-dimethylacetamide orβ,β-dimethyl-α-oximino-butyronitrile is preferably employed.

Suitable diluents are all inert organic solvents. These include ethers,such as diethyl ether, dioxane or tetrahydrofuran; hydrocarbons such asbenzene or toluene; chlorohydrocarbons, such as methylene chloride,chloroform or chlorobenzene; nitriles and esters; and mixtures of thesesolvents.

To bind the hydrogen fluoride formed during the reaction, a tertiaryorganic base such as, for example, triethylamine or dimethylbenzylamine,is preferably added to the reaction mixture.

The reaction temperatures can be varied within a fairly wide range. Ingeneral, the reaction is carried out at between 0° and 100° C.,preferably of from 20° to 60° C.

The reactants are usually employed in equimolar amounts, but the use ofone component in excess is also possible, though it is not accompaniedby any significant advantages.

The active compounds are well tolerated by plants, have a favorablelevel of toxicity to warm-blooded animals, and can be used for combatingarthropod pests, especially insects and arachnids, and nematode pestswhich are encountered in agriculture, in forestry, in the protection ofstored products and of materials, and in the hygiene field. They areactive against normally sensitive and resistant species and against allor some stages of development. The abovementioned pests include:

from the class of the Isopoda, for example Oniscus asellus, Armadilliumvulgare and Porcellio scaber; from the class of the Diplopoda, forexample Blaniulus guttulatus; from the class of the Chilopoda, forexample Geophilus carpophagus and Scutigera spec.; from the class of theSymphyla, for example Scutigerella immaculata; from the order of theThysanura, for example Lepisma saccharina; from the order of theCollembola, for example Onychiurus armatus; from the order of theOrthoptera, for example Blatta orientalis, Periplaneta americana,Leucophaea maderae, Blattella germanica, Acheta domesticus, Gryllotalpaspp., Locusta migratoria migratorioides, Melanoplus differentialis andSchistocerca gregaria; from the order of the Dermaptera, for exampleForficula auricularia; from the order of the Isoptera, for exampleReticulitermes spp.; from the order of the Anoplura, for examplePhylloxera vastatrix, Pemphigus spp., Pediculus humanus corporis,Haematopinus spp. and Linognathus spp.; from the order of theMallophaga, for example Trichodectes spp. and Damalinea spp., from theorder of the Thysanoptera, for example Hercinothrips femoralis andThrips tabaci; from the order of the Heteroptera, for example Eurygasterspp., Dysdercus intermedius, Piesma quadrata, Cimex lectularius,Rhodnius prolixus and Triatoma spp.; from the order of the Homoptera,for example Aleurodes brassicae, Bemisia tabaci, Trialeurodesvaporariorum, Aphis gossypii, Brevicoryne brassicae, Cryptomyzus ribis,Doralis fabae, Doralis pomi, Eriosoma lanigerum, Hyalopterus arundinis,Macrosiphum avenae, Myzus spp., Phorodon humuli, Rhopalosiphum padi,Empoasca spp., Euscelis bilobatus, Nephotettix cincticeps, Lecaniumcorni, Saissetia oleae, Laodelphax striatellus, Nilaparvata lugens,Aonidiella aurantii, Aspidiotus hederae, Pseudococcus spp. and Psyllaspp.; from the order of the Lepidoptera, for example Pectinophoragossypiella, Bupalus piniarius, Cheimatobia brumata, Lithocolletisblancardella, Hyponomeuta padella, Plutella maculipennis, Malacosomaneustria, Euproctis chrysorrhoea, Lymantria spp., Bucculatrixthurberiella, Phyllocnistis citrella, Agrotis spp., Euxoa spp., Feltiaspp., Earias insulana, Heliothis spp., Laphygma exigua, Mamestrabrassicae, Panolis flammea, Prodenia litura, Spodoptera spp.,Trichoplusia ni, Carpocapsa pomonella, Pieris spp., Chilo spp., Pyraustanubilalis, Ephestia kuehniella, Galleria mellonella, Cacoecia podana,Capua reticulana, Choristoneura fumiferana, Clysis ambiguella, Homonamagnanima and Tortrix viridana; from the order of the Coleoptera, forexample Anobium punctatum, Rhizopertha dominica, Bruchidius obtectus,Acanthoscelides obtectus, Hylotrupes bajulus, Age astica alni,Leptinotarsa decemlineata, Phaedon cochleariae, Diabrotica spp.,Psylliodes chrysocephala, Epilachna varivestis, Atomaria spp.,Oryzae-philus surinamensis, Anthonomus spp., Sitophilus spp.,Otiorrhynchus sulcatus, Cosmopolites sordidus, Ceuthorrhynchusassimilis, Hypera postica, Dermestes spp., Trogoderma spp., Anthrenusspp., Attagenus spp., Lyctus spp., Meligethes aeneus, Ptinus spp.,Niptus holoeucus, Gibbium psylloides, Tribolium spp., Tenebrio molitor,Agriotes spp., Conoderus spp., Melolontha melolontha, Amphimallonsolstitialis and Costelytra zealandica; from the order of theHymenoptera, for example Diprion spp., Hoplocampa spp., Lasius spp.,Monomorium pharaonis and Vespa spp.; from the order of the Diptera, forexample Aedes spp., Anopheles spp., Culex spp., Drosophila melanogaster,Musca spp., Fannia spp., Calliphora erythrocephala, Lucilia spp.,Chrysomyia spp., Cuterebra spp., Gastrophilus spp., Hyppobosca spp.,Stomoxys spp., Oestrus spp., Hypoderma spp., Tabanus spp., Tannia spp.,Bibio hortulanus, Oscinella frit, Phorbia spp., Pegomyia hyoscyami,Ceratitis capitata Dacus oleae and Tipula paludosa; from the order ofthe Siphonaptera, for example Xenopsylla cheopis and Ceratophyllus spp.;from the class of the Arachnida, for example Scorpio maurus andLatrodectus mactans; from the order of the Acarina, for example Acarussiro, Argas spp., Ornithodoros spp., Dermanyssus gallinae, Eirophyesribis, Phyllocoptruta oleivora, Boophilus spp., Rhipicephalus spp.,Amblyomma spp., Hyalomma spp., Ixodes spp., Psoroptes spp., Chorioptesspp., Sarcoptes spp., Tarsonemus spp., Bryobia praetiosa; Panonychusspp. and Tetranychus spp.

When used against hygiene pests and pests of stored products, the activecompounds are distinguished by an excellent residual activity on woodand clay as well as a good stability to alkali on limed substrates.

The active compounds according to the instant invention can be utilized,if desired, in the form of the usual formulations or compositions withconventional inert (i.e. plant compatible or herbicidally inert)pesticide diluents or extenders, i.e. diluents, carriers or extenders ofthe type usable in conventional pesticide formulations or compositions,e.g. conventional pesticide dispersible carrier vehicles such as gases,solutions, emulsions, wettable powders, suspensions, powders, dustingagents, foams, pastes, soluble powders, granules, aerosols,suspension-emulsion concentrates, seed-treatment powders, natural andsynthetic materials impregnated with active compound, very fine capsulesin polymeric substances and in coating compositions, for use on seed,and formulations used with burning equipment, such as fumigatingcartridges, fumigating cans, fumigating coils and the like, as well asULV cold mist and warm mist formulations.

These are prepared in known manner, for instance by extending the activecompounds with conventional pesticide dispersible liquid diluentcarriers and/or dispersible solid carriers optionally with the use ofcarrier vehicle assistants, e.g. conventional pesticide surface-activeagents, including emulsifying agents and/or dispersing agents, whereby,for example, in the case where water is used as diluent, organicsolvents may be added as auxiliary solvents. The following may bechiefly considered for use as conventional carrier vehicles for thispurpose: aerosol propellants which are gaseous at normal temperaturesand pressures, such as halogenated hydrocarbons as well as butane,propane, nitrogen and carbon dioxide; inert dispersible liquid diluentcarriers, including inert organic solvents, such as aromatichydrocarbons (e.g. benzene, toluene, xylene, alkyl naphthalenes, etc.),halogenated, especially chlorinated, aromatic hydrocarbons (e.g.chlorobenzenes, etc.), cycloalkanes, (e.g. cyclohexane, etc.), paraffins(e.g. petroleum or mineral oil fractions), chlorinated aliphatichydrocarbons (e.g. methylene chloride, chloroethylenes, etc.), alcohols(e.g. methanol, ethanol, propanol, butanol, glycol, etc.) as well asethers and esters thereof (e.g. glycol monomethyl ether, etc.), amines(e.g. ethanolamine etc.), amides (e.g. dimethyl formamide, etc.),sulfoxides (e.g. dimethyl sulfoxide, etc.), acetonitrile, ketones (e.g.acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone,etc.), and/or water; as solid carriers, ground natural minerals, such askaolins, clays, talc, chalk, quartz, attapulgite, montmorillonite ordiatomaceous earth, and ground synthetic minerals, such ashighly-dispersed silicic acid, alumina and silicates; as solid carriersfor granules; crushed and fractionated natural rocks such as calcite,marble, pumice, sepiolite and dolomite, as well as synthetic granules ofinorganic and organic meals, and granules of organic material such assawdust, coconut shells, maize cobs and tobacco stalks; whereas thefollowing may be chiefly considered for use as conventional carriervehicle assistants, e.g. surface-active agents, for this purpose:emulsifying agents, such as non-ionic and/or anionic emulsifying agents(e.g. polyethylene oxide esters of fatty acids, polyethylene oxideethers of fatty alcohols, alkyl sulfates, alkyl sulfonates, arylsulfonates, albumin hydrolyzates, etc., and especially alkylarylpolyglycol ethers, magnesium stearate, sodium oleate, etc.); and/ordispersing agents, such as lignin, sulfite waste liquors, methylcellulose, etc.

Adhesives such as carboxymethylcellulose and natural and syntheticpolymers in the form of powders, granules or latices, such as gumarabic, polyvinyl alcohol and polyvinyl acetate, can be used in theformulations.

It is possible to use colorants such as inorganic pigments, for exampleiron oxide, titanium oxide and Prussian Blue, and organic dyestuffs,such as alizarin dyestuffs, azo dye-stuffs and metal phthalocyaninedyestuffs, and trace nutrients such as salts of iron, manganese, boron,copper, cobalt, molybdenum and zinc.

Such active compounds may be employed alone or in the form of mixtureswith one another and/or with such solid and/or liquid dispersiblecarrier vehicles and/or with other known compatible active agents,especially plant protection agents, such as other arthropodicides andnematicides, or fungicides, bactericides, rodenticides, herbicides,fertilizers, growth-regulating agents, etc., if desired, or in the formof particular dosage preparations for specific application madetherefrom, such as solutions, emulsions, suspensions, powders, pastes,and granules which are thus ready for use.

As concerns commercially marketed preparations, these generallycontemplate carrier composition mixtures in which the active compound ispresent in an amount substantially between about 0.1-95% by weight, andpreferably 0.5-90% by weight, of the mixture, whereas carriercomposition mixtures suitable for direct application or fieldapplication generally contemplate those in which the active compound ispresent in an amount substantially between about 0.0000001-100,preferably 0.01-10%, by weight of the mixture. Thus, the presentinvention contemplates overall compositions which comprise mixtures of aconventional dispersible carrier such as (1) a dispersible inert finelydivided carrier solid, and/or (2) a dispersible carrier liquid such asan inert organic solvent and/or water, preferably including asurface-active effective amount of a carrier vehicle assistant, e.g. asurface-active agent, such as an emulsifying agent and/or a dispersingagent, and an amount of the active compound which is effective for thepurpose in question and which is generally between about 0.0001-95%, andpreferably 0.01-95%, by weight of the mixture.

The active compounds can also be used in accordance with the well knownultra-low-volume process with good success, i.e. by applying suchcompound if normally a liquid, or by applying a liquid compositioncontaining the same, via very effective atomizing equipment, in finelydivided form, e.g. average particle diameter of from 50-100 microns, oreven less, i.e. mist form, for example by airplane crop sprayingtechniques. Only up to at most about a few liters/hectare are needed,and often amounts only up to about 15 to 1000 g/hectare, preferably 40to 600 g/hectare, are sufficient. In this process it is possible to usehighly concentrated liquid compositions with said liquid carriervehicles containing from about 20 to about 95% by weight of the activecompound or even the 100% active substance alone, e.g. about 20-100% byweight of the active compound.

Furthermore, the present invention contemplates methods of selectivelykilling, combating or controlling pests, e.g. arthropods such as insectsand acarids, and nematodes, which comprises applying to at least one ofcorrespondingly (a) such insects, (b) such acarids, (c) such nematodesand (d) the corresponding habitat thereof, i.e. the locus to beprotected, e.g. to a growing crop, to an area where a crop is to begrown or to a domestic animal, a correspondingly combative or toxicamount, i.e. an insecticidally, acaricidally or nematicidally effectiveamount, of the particular active compound of the invention alone ortogether with a carrier vehicle as noted above. The instant formulationsor compositions are applied in the usual manner, for instance byspraying, atomizing, vaporizing, scattering, dusting, watering,squirting, sprinkling, pouring, fumigating, and the like.

It will be realized, of course, that the concentration of the particularactive compound utilized in admixture with the carrier vehicle willdepend upon the intended application. Therefore, in special cases it ispossible to go above or below the aforementioned concentration ranges.

The unexpected superiority and outstanding activity of the particularnew compounds of the present invention are illustrated, withoutlimitation, by the following examples:

EXAMPLE 1 Phaedon larvae test

Solvent: 3 parts by weight of dimethylformamide

Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weightof the active compound was mixed with the stated amount of solventcontaining the stated amount of emulsifier and the concentrate wasdiluted with water to the desired concentration.

Cabbage plants (Brassica oleracea) were sprayed with the preparation ofthe active compound until dripping wet and were then infested withmustard beetle larvae (Phaedon cochleariae).

After the specified periods of time, the degree of destruction wasdetermined in %: 100% means that all the beetle larvae had been killed,whereas 0% means that none of the beetle larvae had been killed.

The active compounds, the concentrations of the active compounds, theevaluation times and the results can be seen from the following table:

                                      Table 1                                     __________________________________________________________________________    (Insects which damage plants)                                                 Phaedon larvae test                                                                                          Active com-                                                                          Degree of                                                              pound con-                                                                           destruct-                                                              centration                                                                           ion in %                                  Active compounds             in %   after 3 days                            __________________________________________________________________________     ##STR8##                      0.1 0.01                                                                             100  0                                   ##STR9##                      0.1 0.01                                                                             100  0                                   ##STR10##                     0.1 0.01                                                                             100 100                                  ##STR11##                     0.1 0.01                                                                             100 100                                  ##STR12##                     0.1 0.01                                                                             100 100                                  ##STR13##                     0.1 0.01                                                                             100 100                                  ##STR14##                     0.1 0.01                                                                             100 100                                  ##STR15##                     0.1 0.01                                                                             100  85                                  ##STR16##                     0.1 0.01                                                                             100 100                                  ##STR17##                     0.1 0.01                                                                             100 100                                  ##STR18##                     0.1 0.01                                                                             100 100                                  ##STR19##                     0.1 0.01                                                                             100 100                                  ##STR20##                     0.1 0.01                                                                             100 100                                  ##STR21##                     0.1 0.01                                                                             100 100                                  ##STR22##                     0.1 0.01                                                                             100 100                                  ##STR23##                     0.1 0.01                                                                             100  95                                  ##STR24##                     0.1 0.01                                                                             100 100                                  ##STR25##                     0.1 0.01                                                                             100 100                                  ##STR26##                     0.1 0.01                                                                             100 100                                  ##STR27##                     0.1 0.01                                                                             100 100                                  ##STR28##                     0.1 0.01                                                                             100 100                                  ##STR29##                     0.1 0.01                                                                             100 100                                  ##STR30##                     0.1 0.01                                                                             100 100                                  ##STR31##                     0.1 0.01                                                                             100 100                                  ##STR32##                     0.1 0.01                                                                             100 100                                  ##STR33##                     0.1 0.01                                                                             100 100                                 __________________________________________________________________________

EXAMPLE 2 Myzus test (contact action)

Solvent: 3 parts by weight of dimethylformamide

Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weightof the active compound was mixed with the stated amount of solventcontaining the stated amount of emulsifier and the concentrate wasdiluted with water to the desired concentration.

Cabbage plants (Brassica oleracea) which had been heavily infested withpeach aphids (Myzus persicae) were sprayed with the preparation of theactive compound until dripping wet.

After the specified periods of time, the degree of destruction wasdetermined as a percentage: 100% means that all the aphids were killed,whereas 0% means that none of the aphids were killed.

The active compounds, the concentrations of the active compounds, theevaluation times and the results can be seen from the following table:

                                      Table 2                                     __________________________________________________________________________    (Insects which damage plants)                                                 Myzus test                                                                                                   Active com-                                                                   pound con-                                                                    centration                                                                           Degree of                                 Active compounds             in %   destruction                             __________________________________________________________________________     ##STR34##                     0.1 0.01                                                                              90  0                                   ##STR35##                     0.1 0.01                                                                              90  0                                   ##STR36##                     0.1 0.01                                                                             100 100                                  ##STR37##                     0.1 0.01                                                                              99 85                                   ##STR38##                     0.1 0.01                                                                             100  99                                  ##STR39##                     0.1 0.01                                                                             100 100                                  ##STR40##                     0.1 0.01                                                                             100 98                                   ##STR41##                     0.1 0.01                                                                             100   99                                 ##STR42##                     0.1 0.01                                                                             100 100                                 __________________________________________________________________________

EXAMPLE 3 Doralis test (systemic action)

Solvent: 3 parts by weight of dimethylformamide

Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weightof the active compound was mixed with the stated amount of solvent andthe stated amount of emulsifier, and the concentrate was diluted withwater to the desired concentration.

Bean plants (Vicia faba) which had been heavily infested with the beanaphid (Doralis fabae) were each watered with 20 ml of the preparation ofthe active compound so that this preparation penetrated into the soilwithout wetting the leaves of the bean plants. The active compound wastaken up from the soil by the bean plants and thus passed to theinfested leaves.

After the specified periods of time, the degree of destruction wasdetermined as a percentage. 100% means that all the aphids were killed;0% means that none of the aphids were killed.

The active compounds, the concentrations of the active compounds, theevaluation times and the results can be seen from the following table:

                                      Table 3                                     __________________________________________________________________________    (Insects which damage plants)                                                  Doralis test (systemic action)                                                                              Active com-                                                                          Degree of                                                              pound con-                                                                           destruction                                                            centration                                                                           in % after                              Active compounds               in %   4 days                                  __________________________________________________________________________     ##STR43##                     0.1 0.01                                                                             100  0                                   ##STR44##                     0.1 0.01                                                                             100  0                                   ##STR45##                     0.1 0.01                                                                             100  99                                  ##STR46##                     0.1 0.01                                                                             100 100                                  ##STR47##                     0.1 0.01                                                                             100 100                                  ##STR48##                     0.1 0.01                                                                             100 100                                  ##STR49##                     0.1 0.01                                                                             100 100                                  ##STR50##                     0.1 0.01                                                                             100 100                                  ##STR51##                     0.1 0.01                                                                             100 100                                  ##STR52##                     0.1 0.01                                                                             100 100                                  ##STR53##                     0.1 0.01                                                                             100 100                                 __________________________________________________________________________

EXAMPLE 4 Tetranychus test (resistant)

Solvent: 3 parts by weight of dimethylformamide

Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weightof the active compound was mixed with the stated amount of solvent andthe stated amount of emulsifier and the concentrate was diluted withwater to the desired concentration.

Bean plants (Phaseolus vulgaris) which were heavily infested with thetwo-spotted spider mite (Tetranychus urticae) in all stages ofdevelopment were sprayed with the preparation of the active compounduntil dripping wet.

After the specified periods of time, the degree of destruction wasdetermined as a percentage: 100% means that all the spider mites werekilled, whereas 0% means that none of the spider mites were killed.

The active compounds, the concentrations of the active compounds, theevaluation times and the results can be seen from the following table:

                                      Table 4                                     __________________________________________________________________________    (Mites which damage plants)                                                    Tetranychus test                                                                                                   Degree of                                                             Active  destruc-                                                              compound con-                                                                         tion in                                                               centration in                                                                         % after                                 Active compounds              %       2 days                                  __________________________________________________________________________     ##STR54##                    0.1      0                                       ##STR55##                    0.1     100                                     __________________________________________________________________________

EXAMPLE 5

Test insect: Myzus persicae

Solvent: 3 parts by weight of acetone

Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weightof active compound was mixed with the stated amount of solvent, thestated amount of emulsifier was added and the concentrate was dilutedwith water to the desired concentration.

The preparation of active compound was intimately mixed with the soil.The concentration of the active compound in the preparation was ofpractically no importance; only the amount by weight of active compoundper unit volume of soil, which is given hereinafter in ppm (=mg/liter)was decisive. The treated soil was filled into pots and these wereplanted with cabbage (Brassica oleracea). The active compound could inthis way be absorbed from the soil by the roots of the plants and betransported into the leaves.

In order to demonstrate the root-systemic effect, exclusively the leaveswere infested with the abovementioned test insects after 7 days. After afurther 2 days, the evaluation was carried out by counting or estimatingthe dead insects. The root-systemic action of the active compound wasderived from the mortality figures. It was 100% if all the test insectshad been killed and 0% if just as many test insects survived as in thecase of the untreated control.

The active compounds, the amounts used and the results can be seen fromthe table which follows:

                                      Table 5                                     __________________________________________________________________________    Root-systemic action                                                           Myzus persicae                                                                                              Degree of des-                                                                truction in % at                                                              an active compound                                                            concentration of                               Active compound                10 ppm                                         __________________________________________________________________________     ##STR56##                      0%                                             ##STR57##                      0%                                             ##STR58##                      0%                                             ##STR59##                     100%                                            ##STR60##                     100%                                            ##STR61##                     100%                                            ##STR62##                     100%                                            ##STR63##                     100%                                            ##STR64##                     100%                                            ##STR65##                     100%                                            ##STR66##                     100%                                            ##STR67##                     100%                                            ##STR68##                     100%                                           __________________________________________________________________________

EXAMPLE 6

Test nematode: Meloidogyne incognita

Solvent: 3 parts by weight of acetone

Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weightof active compound was mixed with the stated amount of solvent, thestated amount of emulsifier was added and the concentrate was dilutedwith water to the desired concentration.

The preparation of active compound was intimately mixed with soil whichwas heavily infested with the test nematodes. The concentration of theactive compound in the preparation was practically no importance; onlythe amount of active compound per unit volume of soil, which is givenhereinafter in ppm (=mg/liter), was decisive. The soil was filled intopots, lettuce was sown in and the pots were kept at a green-housetemperature of 27° C.

After 4 weeks, the lettuce roots were examined for infestation withnematodes (root galls), and the degree of effectiveness of the activecompound was determined as a percentage. The degree of effectiveness was100% when infestation was completely avoided; it was 0% when theinfestation was exactly the same as in the case of the control plants inuntreated soil which had been infested in the same manner.

The active compound, the amounts applied and the results can be seenfrom the following table:

                                      Table 6                                     __________________________________________________________________________    Meloidogyne incognita                                                                                       Degree of destruction                                                         in % at an active com- - pound                                                concentration of                                Active compound               10 ppm                                          __________________________________________________________________________     ##STR69##                     0%                                              ##STR70##                     0%                                              ##STR71##                    100%                                             ##STR72##                    100%                                             ##STR73##                    100%                                             ##STR74##                    100%                                             ##STR75##                    100%                                             ##STR76##                    100%                                             ##STR77##                    100%                                             ##STR78##                    100%                                             ##STR79##                    100%                                             ##STR80##                    100%                                             ##STR81##                    100%                                             ##STR82##                    100%                                             ##STR83##                    100%                                             ##STR84##                    100%                                             ##STR85##                    100%                                             ##STR86##                    100%                                             ##STR87##                    100%                                             ##STR88##                    100%                                             ##STR89##                    100%                                             ##STR90##                    100%                                             ##STR91##                    100%                                            __________________________________________________________________________

The compounds according to the invention also showed a particularly goodactivity in a test using the insects Phorbia antiqua.

EXAMPLE 7 Mosquito larvae test

Test insects: Aedes aegypti

Solvent: 99 parts by weight of acetone

Emulsifier: 1 part by weight of benzylhydroxydiphenyl polyglycol ether

To produce a suitable preparation of active compound, 2 parts by weightof the active compound were dissolved in 1,000 parts by volume of thesolvent containing the amount of emulsifier stated above. The solutionthus obtained was diluted with water to the desired lowerconcentrations.

The aqueous preparations of the active compounds were placed in glassvessels and about 25 mosquito larvae were then placed in each glassvessel.

After 24 hours, the degree of destruction was determined as apercentage. 100% means that all the larvae were killed. 0% means that nolarvae at all were killed.

The active compounds, the concentrations of the active compounds, thetest insects and the results can be seen from the following table:

                                      Table 7                                     __________________________________________________________________________    Mosquito larvae test                                                                                        Active com-                                                                   pound con-                                                                            Degree                                                                centration of                                                                         of des-                                                               the solution                                                                          truction                                Active compound               in ppm  in %                                    __________________________________________________________________________     ##STR92##                    10      40                                       ##STR93##                    10      80                                       ##STR94##                    10      90                                       ##STR95##                    0.1     100                                      ##STR96##                    1       95                                       ##STR97##                    0.1     100                                      ##STR98##                    0.1     100                                      ##STR99##                    0.1     100                                      ##STR100##                   0.1     100                                      ##STR101##                   0.1     100                                      ##STR102##                   0.1     100                                      ##STR103##                   0.1     100                                      ##STR104##                   1       100                                      ##STR105##                   0.1     100                                      ##STR106##                   1       100                                     __________________________________________________________________________

EXAMPLE 8 LD₁₀₀ test

Test insects: Sitophilus granarius

Solvent: Acetone

2 parts by weight of the active compound were dissolved in 1,000 partsby volume of the solvent. The solution so obtained was diluted withfurther solvent to the desired concentration.

2.5 ml of the solution of the active compound were pipetted into a Petridish. On the bottom of the Petri dish there was a filter paper with adiameter of about 9.5 cm. The Petri dish remained uncovered until thesolvent had completely evaporated. The amount of active compound per m²of filter paper varied with the concentration of the solution of activecompound. About 25 test insects were then placed in the Petri dish andit was covered with a glass lid.

The condition of the test insects was observed 3 days after thecommencement of the experiments. The destruction, in %, was determined.

The active compounds, the concentrations of the active compounds, thetest insects and the results can be seen from the following table:

                                      Table 8                                     __________________________________________________________________________     LD.sub.100 test/Sitophilus granarius                                                                       Active com-                                                                   pound concen-                                                                 tration %                                                                     strength                                                                              Destruction                             Active compounds              solution                                                                              in %                                    __________________________________________________________________________     ##STR107##                   0.2     0                                        ##STR108##                   0.2     0                                        ##STR109##                   0.2     80                                       ##STR110##                   0.02    100                                      ##STR111##                   0.02    100                                      ##STR112##                   0.02    100                                      ##STR113##                   0.02    100                                      ##STR114##                   0.02    100                                      ##STR115##                   0.2 0.02                                                                              100 80                                   ##STR116##                   0.02    100                                      ##STR117##                   0.2 0.02                                                                              100 90                                  __________________________________________________________________________

The process of the present invention is illustrated by the followingexamples, wherein Examples 9 and 10 illustrate the method of preparationof the starting compounds of general formula III:

EXAMPLE 9 ##STR118##

165 g (2.8 moles) of n-propylamine were added dropwise to a solution of250 g (1.31 moles) of p-tosyl chloride in 2 liters of toluene. Themixture was heated under reflux for 4 hours and extracted by shakingwith water, and the organic phase was dried over sodium sulphate andconcentrated in vacuo. 264 g of a colorless oil remained. ##STR119##

264 g (1.24 moles) of the oil obtained as described above and 190 ml(1.36 moles) of triethylamine were dissolved in 2 liters of toluene.83.7 g (0.62 mole) of disulphur dichloride were added dropwise at roomtemperature. The mixture was stirred for 6 hours at room temperature andfor a further hour at 40° C. and was extracted by shaking twice withwater and once with 10% strength aqueous ammonium chloride solution; theorganic phase was dried over sodium sulphate and concentrated in vacuo.The residue was recrystallized from methanol. Yield: 205 g of disulphideof melting point 88°-89° C. ##STR120##

71 g (1 mole) of chlorine gas were passed into a solution of of 205 g(0.42 mole) of the disulphide prepared as described above, in 1 liter ofchloroform, at room temperature. The mixture was then stirred for afurther 8 hours and was left to stand overnight, after which it wasconcentrated in vacuo. 234 g of sulphene-chloride were obtained in theform of an orange-colored oil. ##STR121##

125 ml (0.9 mole) of triethylamine were added dropwise, at roomtemperature, to a solution of 234 g (0.84 mole) of the sulphene-chlorideobtained as described above and 64.7 g (0.84 mole) of N-methylcarbamicacid fluoride in 1 liter of toluene at room temperature. The mixture wasstirred further for 6 hours at 25° C. and 1 hour at 40° C. and wasextracted by shaking twice with water and twice with 10 percent strengthaqueous amonium chloride solution; the organic phase was dried oversodium sulphate and concentrated in vacuo. 226 g of acid fluoride wereobtained in the form of a brown oil; n_(D) ²⁰ =1.5368.

The following were prepared by an analogous method of synthesis:

                  Table 9                                                         ______________________________________                                         ##STR122##               (IIIb)                                               ##STR123##               (IIIc)                                               ##STR124##               (IIId)                                               ##STR125##               (IIIe)                                               ##STR126##               (IIIf)                                               ##STR127##               (IIIg)                                               ##STR128##               (IIIh)                                               ##STR129##               (IIIi)                                               ##STR130##               (IIIj)                                               ##STR131##               (IIIk)                                               ##STR132##               (IIIl)                                               ##STR133##               (IIIm)                                              ______________________________________                                    

EXAMPLE 10 ##STR134##

2.3 g (0.1 mole) of sodium were dissolved in 150 ml of absolutemethanol. 20 g (0.1 mole) of dimethylamidosulphonic acid anilide wereadded and the mixture was stirred for 12 hours at 25° C. It was thenconcentrated and the residue was dried in a high vacuum at 80° C. Thesalt thus obtained was suspended in 30 ml of toluene. 6.75 g (0.05 mole)of disulphur dichloride were added dropwise, the mixture was stirred for12 hours at 25° C., the sodium chloride which had precipitated wasfiltered off and the filtrate was concentrated in vacuo on a rotaryevaporator at a maximum bath temperature of 50° C. The residue wasextracted by stirring with methanol, giving 8.6 g of disulphide ofmelting point 116° C. ##STR135##

3.4 g of sulphuryl chloride were added to a suspension of 11.5 g (0.025mole) of the disulphide, prepared as described above, in 10 ml of carbontetrachloride, and the mixture was warmed for 2 hours under reflux andwas then concentrated. The oil which remained crystallized after a shorttime. ##STR136##

16 g (0.16 mole) of triethylamine were added dropwise, at roomtemperature, to a solution of 37.2 g (0.15 mole) of thesulphene-chloride, prepared as described above, and 11.6 g (0.15 mole)of N-methylcarbamic acid fluoride in 500 ml of toluene. The mixture wasstirred for 8 hours at 25° C. and 1/2 hour at 40° C. and was filtered;the filtrate was concentrated in vacuo. The crystalline residue waswashed with ether.

Yield: 15 g: melting point 84°-85° C.

EXAMPLE 11 ##STR137##

8 ml (0.055 mole) of triethylamine were added dropwise, at 25° C., to 16g (0.05 mole) of N-methyl-N-(4-toluenesulphonic acidpropylamide-N'-sulphenyl)-carbamic acid fluoride (Example 9d) and 5.25 g(0.05 mole) of hydroxamylthioacetic acid S-methyl ester in 250 ml oftoluene. The reaction mixture was stirred for 1 hour at this temperatureand for 2 hours at 50°-60° C. and was then shaken with water. Theorganic phase was separated off and washed twice with 10% strengthaqueous ammonium chloride solution and then dried over sodium sulphate,and the solvent was distilled off in vacuo. An oily residue remained.

Yield: 16 g (82% of theory); n_(D) ²⁰ =1.5634.

The following compounds were prepared analogously:

                                      Table 10                                    __________________________________________________________________________    Compound                              Physical                                No.   Formula                         properties                              __________________________________________________________________________           ##STR138##                     viscous oil                             3                                                                                    ##STR139##                     melting point 98° C.             4                                                                                    ##STR140##                     melting point 84° C.             5                                                                                    ##STR141##                     melting point 101° C.            6                                                                                    ##STR142##                     melting point 30° C.                                                   n.sub.D.sup.20 = 1.5608                 7                                                                                    ##STR143##                     n.sub.D.sup.20 = 1.5681                 8                                                                                    ##STR144##                     n.sub.D.sup.20 = 1.5523                 9                                                                                    ##STR145##                     viscous oil                             10                                                                                   ##STR146##                     n.sub.D.sup.20 = 1.5508                 11                                                                                   ##STR147##                     n.sub.D.sup.20 : 1.5515                 12                                                                                   ##STR148##                     n.sub.D.sup.20 : 1,5520                 13                                                                                   ##STR149##                     n.sub.D.sup.20 : 1.5489                 14                                                                                   ##STR150##                     viscous oil                             15                                                                                   ##STR151##                     viscous oil                             16                                                                                   ##STR152##                     n.sub.D.sup.20 : 1.5430                 17                                                                                   ##STR153##                     viscous oil                             18                                                                                   ##STR154##                     viscous oil                             19                                                                                   ##STR155##                     melting point 100° C.            20                                                                                   ##STR156##                     n.sub.D.sup.20 : 1.5188                 21                                                                                   ##STR157##                     n.sub.D.sup.20 : 1.5185                 22                                                                                   ##STR158##                     n.sub.D.sup.20 : 1.5448                 23                                                                                   ##STR159##                     n.sub.D.sup.20 : 1.5462                 24                                                                                   ##STR160##                     n.sub.D.sup.20 : 1.5462                 25                                                                                   ##STR161##                     n.sub.D.sup.20 : 1.5719                 26                                                                                   ##STR162##                     n.sub.D.sup.20 : 1.5565                 27                                                                                   ##STR163##                     n.sub.D.sup.20 : 1.5570                 28                                                                                   ##STR164##                     viscous oil                             29                                                                                   ##STR165##                     viscous oil                             30                                                                                   ##STR166##                     n.sub.D.sup.20 : 1.5293                 31                                                                                   ##STR167##                     n.sub.D.sup.20 : 1.5592                 32                                                                                   ##STR168##                     n.sub.D.sup.20 : 1.5528                 33                                                                                   ##STR169##                     n.sub.D.sup.20 : 1.5538                 34                                                                                   ##STR170##                     melting point 82° C.             35                                                                                   ##STR171##                     n.sub.D.sup.20 : 1.5148                 36                                                                                   ##STR172##                     n.sub.D.sup.20 : 1.5331                 37                                                                                   ##STR173##                     n.sub.D.sup.20 : 1.5128                 38                                                                                   ##STR174##                     melting point 114° C.            39                                                                                   ##STR175##                     melting point 147° C.            40                                                                                   ##STR176##                     melting point 116° C.            41                                                                                   ##STR177##                     n.sub.D.sup.20 : 1.5505                 42                                                                                   ##STR178##                     n.sub.D.sup.20 : 1.5478                 43                                                                                   ##STR179##                     melting point 114° C.            __________________________________________________________________________

Other compounds which can be similarly prepared include the following

                                      Table 11                                    __________________________________________________________________________     ##STR180##                            (44)                                    ##STR181##                            (45)                                    ##STR182##                            (46)                                    ##STR183##                            (47)                                    ##STR184##                            (48)                                    ##STR185##                                                                   __________________________________________________________________________

It will be appreciated that the instant specification and examples areset forth by way of illustration and not limitation, and that variousmodifications and changes may be made without departing from the spiritand scope of the present invention.

What is claimed is:
 1. An N-methyl-N-(sulphonic acidamide-N'-sulphenyl)-carbamic acid ester of the formula ##STR186## inwhich R¹ is dialkylamino with 1 to 4 carbon atoms in each alkyl radical,phenyl or phenyl carrying at least one halogen, alkyl with 1 to 4 carbonatoms, nitro or trihalogenomethyl substituent,R² is alkyl with 2 to 8carbon atoms, cyclohexyl, phenyl or cycloalkyl or phenyl carrying atleast one halogen, alkyl with 1 to 4 carbon atoms, nitro ortrifluoromethyl substituent, and R⁴ and R⁵ each independently is cyanoor alkyl, alkoxy, alkylthio, alkoxycarbonyl, dialkylcarbamoyl ordialkoxyphosphoryl with up to 4 carbon atoms per alkyl moiety, or R⁴ andR⁵, conjointly with the adjacent carbon atom, form an optionally methyl-or phenyl-substituted dithiolane, dithiane, oxathiolane or oxathianering.
 2. A compound according to claim 1, in which R¹ representsdimethylamino or phenyl which can optionally be substituted by chlorine,methyl or trifluoromethyl, R² represents alkyl with 2 to 6 carbon atoms,cyclohexyl or phenyl, andR⁴ and R⁵ each represent alkyl with 1 to 4carbon atoms, methylmercapto, cyano, dimethylaminocarbonyl orethoxycarbonyl or represent, conjointly with the adjoining carbon atom,a dithiolane ring.
 3. A nematicidal or arthropodicidal compositioncontaining as active ingredient a nematicidally or arthropodicallyeffective amount of an ester according to claim 1 in admixture with adiluent.
 4. A method of combating nematodes or arthropods, whichcomprises applying to the nematodes or arthropods, or to a habitatthereof, a nematicidally or arthropocidally effective amount of an esteraccording to claim
 1. 5. An ester according to claim 1, wherein suchester is ##STR187##
 6. An ester according to claim 1, wherein such esteris ##STR188##
 7. An ester according to claim 1, wherein such ester is##STR189##
 8. The method according to claim 4, in which said ester is##STR190##